/*-
 * Copyright (c) 2012, Columbia University
 * All rights reserved.
 *
 * This software was developed by Georgios Kontaxis <kontaxis@cs.columbia.edu>
 * at Columbia University, New York, NY, USA, in January 2012.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of Columbia University nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __CBUF__

struct buffer {
  char **buf;
  int n;
  int *free;
  int nelem;
  int selem;
  char **readp;
  char **writep;
};

struct buffer *buf_init (int nelem, int selem);
void buf_destroy (struct buffer *buffer);

void buf_push1 (struct buffer *buffer, char *s);
char *buf_pop1 (struct buffer *buffer);

void buf_push2 (struct buffer *buffer, char *s);
void buf_push2n (struct buffer *buffer, char *s, int n);
char *buf_pop2 (struct buffer *buffer);
char *buf_peek2 (struct buffer *buffer);
char *buf_peek2n (struct buffer *buffer, int * n);

#endif
